
HM Digital Pro Series Dual Probe pH/TDS/EC/Temp meter

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Is the HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter Right for You?
If you need a high-precision water quality testing solution, the HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter is an excellent choice. Designed for hydroponics, water treatment, scientific research, and industrial applications, this meter provides accurate readings for pH, EC, TDS, and temperature.
- Features & Benefits
- Product Specifications
- What is included?
- Warranty Policy
HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter
The HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter is a high-precision water quality testing instrument designed for professional and laboratory use. Perfect for hydroponics, water treatment, scientific research, and industrial applications, this meter provides accurate and reliable measurements with ease.

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Measures pH, EC, TDS & temperature simultaneously.
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Dual probe for faster, more accurate readings.
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ATC with three coefficients for precision.
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Water-resistant housing for durability.
Why Choose the HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter?
The HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter is a professional-grade water quality testing device designed for precision and reliability. It delivers accurate measurements for pH, EC, TDS, and temperature, making it perfect for hydroponics, water treatment, laboratories, and industrial applications. With its dual probe system, this meter allows for faster and more efficient readings in multiple solutions.
Why HM Digital?
HM Digital is a trusted name in water quality testing, offering innovative and reliable solutions for growers, aquarium enthusiasts, and professionals. Designed for precision, its advanced meters provide accurate TDS and temperature readings, ensuring optimal water conditions. With user-friendly features like digital calibration and a durable, water-resistant design, HM Digital products help you maintain consistency and efficiency in your water monitoring routine.

Why Buy From Us?
At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.
FAQ Section








Specifications
HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter Specifications | |
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pH Range | 0 – 14 pH |
EC Range | 0 – 9990 µS; 0 – 9.99 mS |
TDS Range | 0 – 8560 ppm (0.7 Scale); 0 – 5000 ppm (0.5 Scale) |
Temperature Range | 0-55 °C; 32-130°F |
Resolution | pH: 0.1 pH EC: 0 – 999: 1µS, 1000 – 9990: 10µS, 0-9.99 mS: 0.01 mS TDS: 0 – 999: 1 ppm, 1000 – 9990: 10 ppm Temperature: 0.1 °C/°F |
Accuracy | ±2% |
EC to TDS Conversion Factor | Non-linear conversions for KCl, 442TM, or NaCl solutions, selectable by the user |
Probes | Dual probe system for enhanced accuracy and quicker response times |
Temperature Compensation | Automatic Temperature Compensation (ATC) with three selectable temperature coefficients |
Housing | Water-resistant construction for durability in demanding environments |
Power Source | 2 x AAA batteries (included) |
Auto-Off Feature | Automatic power-off function to preserve battery life |
Display | Large LCD screen with simultaneous temperature readings |
Dimensions | 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) |
Weight | 164g (5.8 oz) |
What’s in the Box?
The HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter package includes:
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HM Digital Pro Series Dual Probe pH/TDS/EC/Temp Meter
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Dual probe system for enhanced accuracy and simultaneous readings
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2 x AAA batteries (pre-installed)
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User manual with step-by-step setup, calibration, and maintenance instructions

Warranty Policy
Please check out the manufacturers website for Warranty related issues.